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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (4): 252-255.

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

富里酸影响下针铁矿对镉吸持-解吸特征研究

严 锐,陈 宏,魏世强   

  • 收稿日期:2008-10-20 修回日期:2008-11-26 出版日期:2009-02-20 发布日期:2009-02-20

The Characters of Adsorption and Desorption of Cadmium by Goethite under The Effect of Fulvic Acid

  • Received:2008-10-20 Revised:2008-11-26 Online:2009-02-20 Published:2009-02-20

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摘要： 通过采用等温吸附热力学方法，探讨针铁矿单独存在以及富里酸-针铁矿共存体系对重金属镉吸附-解吸的特征和影响因素。研究表明：针铁矿对镉的吸附能力较强，在富里酸存在下其吸附能力有所增加，同时也改变了吸附镉的解吸特性。因此，针铁矿-富里酸共存体系对于控制重金属镉污染具有较好的效果。

关键词: 烤烟品种, 烤烟品种, 方差分析, 模糊综合评判

Abstract: Isothermal adsorption were carried out to discussed the characters and influential factors of adsorption and desorption of cadmium under two conditions. The one is that there is only goethite, and the other one is the coexistensive system of fulvic acid and goethite. The results of this experiment show that the adsorption of cadmium on goethite is intense, and the adsorption is more intense under the condition which have both goethite and fulvic acid. The research shows that the FA-goethite coexistensive system is quite effectual in the way of controlling the heavy metal pollution of cadmium.